Lanzhou Lily is one of the famous specialties of Qilihe District. Lily produced here has a large white, delicate and sweet, rich nutrition and other characteristics, has a good reputation at home and abroad, in order to meet the needs of the form, it is necessary to promote Lanzhou Lily pollution-free production technology. This is of great significance for improving the level and grade of Lanzhou Lily, expanding market influence, and improving market competitiveness. 1, ready before broadcast 1.1 election. The pollution-free Lanzhou Lily Production Base should be selected in a non-pollution and ecologically sound area, with an altitude of 1800-2000 meters above sea level, a wet and humid area, a deep soil layer, and a high content of organic matter rich in humus sandy loam. Former crops are wheat and beans. 1.2 Use high quality bulbs. The bulbs are round or oblong, with luxuriant roots, undisturbed bulbs, and no single head bulbs. Generally divided into three levels according to the weight of bulbs. One level of 20-30 grams of bulbs, 12-20 grams of secondary bulbs, 12 grams of three bulbs. 1.3 Soil fertigation. After the harvest, the ridges should be ploughed in time. After the fall, the worms should be harvested and fertilized. After deep-casting in Daejeon, 5000 kg of organic fertilizer should be applied per acre, 50 kg of plant ash, and 20 kg of superphosphate should be added. Ammonium 10 kg, apply fertilizer in the planting trench. Each mu of cooked chicken manure, sheep manure or oil residue 100-200 kg. After thoroughly mixing with the soil, cultivate the lily again. 2, sowing 2.1 planting time. It is generally from late October to early November or mid-January. 2.2 Planting density. According to the size of the bulb, the primary bulb spacing is 40 centimeters, the spacing between the plants is 17-20 centimeters, 8,000-10,000 strains per mu are planted, 200-250 kilograms of bulbs are used, and the second bulb spacing is 35 centimeters, and the plant spacing is 15-16. In centimeters, about 12,000 strains are planted per acre, and about 200 kg are planted. The third-class bulbs should be cultivated in close planting, with wide and narrow rows of planting. The wide and narrow rows of plants should be 30 cm apart and the narrow row spacing should be 5 cm. Each 4 narrow rows should be broadcasted with a plant spacing of 5 cm. Each mu can be planted. About 150,000 bulbs were planted and cultivated for 2-3 years to become a second-class bulb and then colonized. 2.3 Planting depth. The depth of lily planting in Lanzhou is suitable for covering 5-10 cm of soil, and the depth of the ditch is about 15 cm. Due to the support of the fleshy roots, the bulbs are located in a depth of 8-13 cm in the soil, and the bulbs cover a depth of 5 to 10 cm. 2.4 Planting methods. When planting Lanzhou Lily bulbs, the position of the bulbs must be upright and the bulbs should face upwards. 3. Field Management 3.1 Top dressing. Lily is a perennial crop, pay attention to the artificial supplement of nutrients. Generally, when the soil begins to thaw, the fertilizer is spread, and hoeing and shallow cultivating are performed to mix the fertilizer with the soil. The composting organic fertilizer can be applied at a rate of about 3,000 kg per mu and a small amount of diammonium phosphate and potassium chloride are added at the same time. 3.2 Weeding and weeding. Planting Lanzhou Lilies requires deep cultivating in the first and second years, and changing to shallow cultivating in the third year to avoid excessive damage to the root system. At the same time, cultivator should combine rushes of grass and sward 3-4 times a year. 3.3 Remove buds. In order to stop the reproductive growth of Lilium lancifolium in a timely manner and reduce the nutrient consumed by flowering and other reproductive growth, it is beneficial to the expansion of underground bulbs and the accumulation of stored material, and timely removal of flower buds. The removal of buds should be performed on a sunny day to facilitate wound healing. 3.4 Winter Management. Before the soil is frozen, clean up the remaining stems and weeds in the field. 4. Pest control. Agricultural control, biological control and physical control methods should be used, and chemical pesticides should be avoided as much as possible. In particular, the use of highly toxic and high-residue pesticides is strictly prohibited. 4.1 Insects 4.1.1 Underground pests. Voluntarily cultivating and picking up insects during autumn cultivation; spread poisonous soil in planting rows or rows during sowing and cultivating in May, and use 50% phoxim 400-500 g per acre to mix poisonous soil, evenly spread into Furrows. 4.1.2 Locusts. 10% imidacloprid wettable powder 2000 times spray every 7-10 days. 4.2 Disease 4.2.1 Leaf blight. In the early stage of the disease, 80% mancozeb 1000 times solution or 25% carbendazim 1000 times solution was sprayed. 4.2.2 Blight. 70% thiophanate-methyl wettable powder 600-800 times spray, spray once every 7-10 days, 2-3 times in a row. China Agricultural Network Editor
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